FIELD: physics.
SUBSTANCE: invention can be applied in iron bar demagnetisation. Invention claims method of iron bar demagnetization by simultaneous affection of iron bar by alternate and direct fields in one point with automatic field value adjustment by demagnetisation control device featuring feedback link by remaining bar magnetization; generation of both alternate electromagnetic field demagnetising a rod directly, but also direct electromagnetic field compensating static magnetic fields, by solenoid; waveform change for current running over solenoid, so that current wave takes form of sinusoid displaced to one of polarities at a value required for constant field component generation; remaining bar magnetisation is assessed by remaining magnetisation sensor, and if permissible magnetisation level is exceeded, microcontroller program adjusts alternate current amplitude and frequency and direct current value automatically.
EFFECT: simplified demagnetisation method, enhanced demagnetisation efficiency.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEMAGNETISATION DEVICE AND METHOD OF LONG FERROMAGNETIC ITEMS | 2010 |
|
RU2419906C1 |
| METHOD FOR DEMAGNETIZING LARGE-SIZED FERROMAGNETIC PRODUCT | 2016 |
|
RU2636929C2 |
| DEVICE FOR REJECTING PARTS OF SOFT MAGNETIC MATERIALS BY COERCIVE FORCE VALUE | 0 |
|
SU1019382A1 |
| METHOD AND DEVICE FOR DETERMINING RELAXATION COERCIVE FORCE AND RELAXATION MAGNETIZATION OF ELONGATED PRODUCTS FROM FERROMAGNETIC MATERIALS | 2016 |
|
RU2627122C1 |
| DEVICE FOR DEMAGNETIZING PERMANENT MAGNET TO GIVEN MAGNETIZATION VALUE | 0 |
|
SU1091235A1 |
| COERSIVITY MEASURING METHOD | 0 |
|
SU773543A1 |
| DEMAGNETIZER | 0 |
|
SU1748034A1 |
| METHOD OF DEGAUSSING SHIP AND DEGAUSSING RIG FOR REALIZATION OF THIS METHOD | 1994 |
|
RU2095277C1 |
| LOCAL NEUTRALISATION DEVICE OF PIPELINE ELEMENTS | 2007 |
|
RU2331945C1 |
| METHOD OF DEMAGNETIZING PERMANENT MAGNETS | 0 |
|
SU851505A1 |
